Governor for internal-combustion engines



H. P MAMMEN. GOVERNOR FOR INTERNAL COMBUSTION ENGINE/S.

APPLICATION FILED AUG. I3. 19! 7- .Patentvd Mar. 2, 1920.

H. P. Mammg raga T OFFICE.

KYLE-RY l". MATRIX/ZEN, OF SPRINGFIELD, OHIO.

3,33%,ti3ti.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed August 13,1917. Serial No. 185,930.

To all whom it may concern:

Be it known that .l, i ress P. Mei mam, a citizen of the United States.of America, a

'rcsident of Springfield, in the county of internal combustion engines,the

' jest b egg to produce'a simple and "efiicient means regulating theadmission J01" fluid to the engine, thereby limiting speed of theengine. The governor includes an automatic valve operated by theforce/due to the velocity the charge flowing the engine. o fqdalnce withas speed of the ngine pistons,

speed reaches oredetermined iutomatic valve is actuated to rd theflowing to the changes in and when maximum shut off or engine. Aspointed out, the governor is not necessarily alfected by a change in thepressure of the fluid, not by a change in the volume of fluid: actiondepends entirely upon the velocity of the fluid. Therefore, largevolumes 6-2 the explosive mixture may be admitted to the cylinders,provided the engine does not run taste? than the predetermined maximumspeed. When the governor is used on a motor vehicle it will regulate thespeed of the vehicle. and any desired volume of the explosive-mixturemay be admitted to the cylinders while'the engine is runnii'ig slowerthan the maximum speed. This enables the cylinders to receive largevolumes of the charge when the vehicle is heavily loaded, or when it istraveling up a hill.

'With the foregoing and other objects in view the invention comprisestoe novel coninc-s, wherein is shown the hodiment the invention;

ill be hereinafter more fully to be understood that the inventioncomprehends changes, variations and modifications which come within thescope of the claims hereunto appended.

Figure I is a side elevation showing my governor arranged between acarbureter and the intake pipe of the internal combustion engine.

Fig. II is an enlarged vertical section of the governor.

Fig. III is an inverted parts shown in Fig. II. Fig. IV is a fragmentavydetail View illustrating the means for sealing the governor after it hasbeen adjusted.

A designates an upright valve housing an ranged between a carburetor Band the intake pipe C of the internal combustion engine, said intakepipe being connected to a manifold D. The mixture passing from thecarburetor flows upwardly, through the valve housing A and intakepipe/C, to the manifold D.

1 designates a vertical stem arranged within the valve housing andprovided with screw threads, as shown in Fig. II. Aconica l valve 2,mounted in the housing A, may be moved toward and away from a conicalwall 3 at the upper portion of the housing. The valve 2 is threadedinternally to receive the screw threads on -the stem 1, and when saidvalve moves toward and away from the conical wall 3 it rotates on theste 1 1. 4 designates vanes radiating from a hub at the lower end of thevalve 2. 5 designates a torsional spring surrounding the stem 1 andsecured at its upper end to said stem, the lower end of the spring beingsecured to the valve 2. The spring 5 is under tension and it tends toretain the valve in engagement with a boss 6 near the lower end of thevalve housing, as shown by full lines in lFig. II.

The means for adjusting the spring 5 complan View of the prises a wormwheel 7 fixed to the lower end of the stem 1, a worm 8 meshing with saidworm wheel, a shaft 9 to which the worm is secured, and an operatingknob 10 fixed to the shaft 9. The operating knob 10 is located at theexterior of the valve housing, so it can be conveniently operated forthe purpose of rotating the elements just described, thereby varying thetension of the spring A ratchet wheel 11' is fixed to the shaft 9, and apawl 12 cooperates witlrsaid ratchet wheel to lock the spring adjustingdevice. lhe pawl 12 normally engages a stop pin 13. The seal shown inFigs. III

. and IV includes a wire 1% passing through the pawl 12 and also througha lug'on the reter and through'the valve housing A to valve housing.After the device has been adjusted the seal is applied to the pawl 12,as shown in the .lrawings, to prevent an unauthorized person fromchanging the adjustment. It is, of course, possible for anyone to breakthe seal and change the ad.- justment. The owner of the vehicle canadjust the governor for any desired maximum speed, and if the adjustmentis changed by the operator or otherunauthorized person this will beindicated by the broken seal or by the absence of a seal.

inatic valve device comprising a valve arranged insaid conductor, and ascrew having threads to which said valve is rotatably titted, said valvebeing adapted to rotate lVhen the engine is in operation the explosivemixture is drawn from the carbuthe intake pipe 0.. The fluid flowingthrough the valve housing impinges against the vanes 4, thereby tendingto rotate the valve 2 on the threaded stem 1. this tendency beingopposed by the spring 5. \Vhen the engine pistons move very rapidly, thecharge 15 drawn through the valve chamber at a high velocity, and whenthe torce due to the velocity is greater than the force of the spring a,the vanes i will revolve so as to;advance the valve 2 toward the conicalwall 3, thus retarding the explosive mixture.

It is llil1 )01'tdl'lll to note that the autoii'iatie action of the valvc'is due to'the velocity, and not to the volume or pressure of thecharge. When the motor vehicle is heavily loaded,'or when it is movingup a hill, the

throttle may be opened to obtain the (10-.

sired power withoutjactuating theautoinatie valve. The velocity"of-t-he=ch arge depends primarily upon the speedot the pistons, and

since the action of thefva-lve' is due to-th'e velocity it will beapparent device will regulate the speed [The vanes'4 do not revolve freethe engine. they are practically stationary most of the times Themixture, passing the ,"vanes, is therefore whirled iiithe valve chamberA, theresult being a better mixture and a higher degree of etliciency.Centrifugal force causes the liquid portions of the whirling mixture tostrike the wall of the valve chamber, and this liquid (gasolcne) is'iei'initted to return by gravity to the carbureter.

I claim:

1. In an engine governor, a conductor through which fluid is deliveredto theengame, and an automatic valve device whereby- 'S the rate of flowoi" the fluid is limited to limit the speed of the engine, said-ant hatthe f new' and advance along the screw to retard the How of fluid, and.said valve being actuated y the force due to the velocity of the fluid.

In an engine governor, a conductor through which fluid is delivered tothe engine, and an automatic valve device Where by the rate of flow ofthe fluid is limited so as to limit tliespeed of the engine, saidautomaticvalve device comprising a'valve by the rate of flow of thefluid is limitedso as to limit the speed of the engine, said automaticvalve device comprising a valve arranged in said conductor, a screwhaving threads to which said valve is rotatably fitted, said valve beingadapted to rotate and advance along the screw to retard the flow offluid. vanes carried by said valve, said valve and vanes being actuated"by the force due to the velocity of the fluid impinging against saidvanes, and a spring tending to prevent said valve from rotating on thescrew.

4. in an engine governor, a conductor through which fluid is deliveredto the epgine, and an automatic valve device Whereby the rate offiow ofthe fluid is limited so as to limit the speed of the engine, saidautoinatic valve device con'iprising a valve arranged in said conductor,a screw having threads to which said valve is rotatably fitted, saidvalve being adapted to rotate and advance along'the screw to retard theflow of fluid, vane carried by said valve, said valveand vanes beingactuated by the force .due to the velocityof the fluid impinging againstsaidavanes, and a torsional spring surrounding said screw "andconnecting the valve to the screw, said torsional spring tending toprevent the valve from rotating on the screw 5, In an engine governor, aconductor through which fluid is delivered to theengine, and anautomatic valve device where-- by the rate of flow of the fluid islimited so as to limit the speed of the engine, said automatic valvedevice comprising a valve arranged in said conductor, a screw havingthreads to which said valve is rotatably fitted, said valve beingadapted to rotate and advance along the screw to retard the flow offluid, vanes carried by said valve, worm meshing with said wheel, ashaft s'csaid valve and vanes being actuated by. the cured to 'saidworm, an operating menibenlo force due to the velocity of the fluidimpingonsaid shaft,-a ratchet wheel secured to said ing against saidvanes, a torsional spring surshaft, anda pawl fitted to said ratchetwheel. rounding said screw and cgnnecti'ngthe Valve In testimony that Iclaim the foregoing tothe screw, said torsio a1 spring tending Ihereunto afiix my si;g'nature. I

\to prevent the valve frdm rotating on the screw, a worm wheel flied tosaid screw; a HARRY P. MAMMEN

